开源Top2！实测阶跃Step 5 Preview，真有点猛啊…

AI Digest

阶跃星辰发布Step 5 Preview模型，以27B激活参数实现600B总参数的高效性能，成本仅为Opus 5的12.5%，在开源榜单跻身Top 2，并通过3D建模、游戏开发等实测验证其Agent能力。

Jiayue releases Step 5 Preview with 27B active parameters and 600B total parameters, achieving Top 2 in open-source rankings while maintaining 12.5% lower cost than Opus 5, validated through 3D modeling and game development tests.

Key points

• Step 5 Preview以27B激活参数实现600B总参数的高效计算 Achieves 600B total parameters with 27B active parameters
• 单任务成本仅为Opus 5的12.5%，性价比突出 12.5% lower cost per task than Opus 5
• Agent能力达44分，跻身全球开源Top 2榜单 Agent score reaches 44, ranking Top 2 in open-source
• 实测完成3D建模、游戏开发等复杂任务 Completed complex tasks like 3D modeling and game dev
• 采用Narrow but Deep架构优化推理效率 Narrow but Deep architecture optimizes reasoning

Takeaway: 阶跃通过参数效率突破，实现高性能与低成本的平衡。 / Jiayue achieves high performance with cost efficiency through parameter optimization.

Why it matters 展示大模型性能与成本平衡的创新路径，对行业技术路线有启发。